Retort for gas furnaces



G. HORN, DECD. E. norm. "5'5 BELING, LEGAL HEIRESSX" RETORT [FOR GAS FURNACES. APPLICATION man SEPT-1.1921.

Patentedfiept. 19,1922.

ynz'ena arr T all whom it may concern:

solid piece of fire-clay whose cross-section cause whenthis figure was" exceeded the re Patented Sept. 19, 1922.

' uMT osrATEs or BnAUnscnwEr'G, GERMANY; ELISABETHnOnNhEa BELIN GUSTAV Bonn,

HEIREss or SAID GUSTAV Bonn, DECEASED.

EEToET ron GAS'IFURNLAGES;

Application filediseptembe r 1,1921. seriainaee'mssh Be it known that I, GUsTAv Honma citi- V zen of the German Republic, residingat 23' Nordstrasse, Braunschweig, Germany, have 5 invented new and useful Improvementsm Retorts for Gas Furnaces, of which the following is a specification.

It is well knownthat the furnacesused for the manufacture of gas are usually equipped with retorts thatare made of a is either elliptic or in the form of a segment, or in rare cases quadrilateralwith rounded corners. has hitherto been limited to 400 mmswbetort collapsed. rittempts have beenlmade to overcome this difficulty makingthe cross section ofthe retort in the shape of a D-with its arcuate side turned upwards or in other words by constructing the retort in the shape of an arched tunnelj But even then the same evil occurred Whenever the inside height of the arch exceeded 400 mms., especially in cases in which the ordinary large inside breadth of 600 mms. was employed.

Another drawback of these solid retorts is that their length and hence their total capacity is exceedingly limited. On account of the internal stresses due to the gasified coal and in consequence of the'strength of the retorts being greatly diminished by the intense heating of the same they have to be furnished in any case with supporting pillars placed inside the furnace at comparatively short distances apart. Now if these supporting pillars yield to different extents, which they very frequently do in consequence of physical differences or of their being subjected-to different intensit es of heat, the retorts are deprived at one or the other pillar of their proper support and the The object of the invention is to remove all these drawbacks and this'isaccomplished by constructing the entire retort in a novel The inside height of these .retorts bouring grooves form a conduit that extends, from the one endof the joint to, theother.

G, LEGAL manner, the I, novel features consisting in These conduits, which are not in themselves a novel feature'in retorts built up of. formed stones, are-filled with fire-proof ;mortar. 1

It has been found that in the case of re torts composed in the above-described manher of trough-shaped bot-tom stones consisting of units whose breadth equals that of the sole of thefurnace, and of" an arched ceiling constructed of long narrow stones with lateral grooves, the inside height of a retort having a normal inside breadth of 600 mms. maybe made 500 mms. or more 7 without the slightest risk of a collapse being incurred. Of course the said increase of the inside-height of'the retort results in a cor responding increase of itsfc'apacity. Even at'the figures" mentioned this increase is so considerable that in comparison with re torts measuring 600 by 400 mms. the increase of' gas production per meter of length of the retort is about 50 cubic meters.

At the same time the enlarged cross section greatly facilitates the operation of knocking the coke out of the retort, and another advantage that accrues isthat when the retort becomes defective at any spot it is only necessary to replace the in'- dividual shaped stones in question 'inforder to make the furnace perfectly *gasetight again. I p

The invention is illustrated in the drawing in which' I v Fig, 1 shows a cross section of'a retort constructed in accordance with-the invention.

Fig. 2 is a perspective view showing how the shaped stones are built together and Fig. 8 is a perspective view of a bottom or floor stone.

The sole of the-retort is made up of shaped stones at of trough-shaped cross section which are as broad as the entire retort and whose-length corresponds to that of the long narrow stones b-usedfor thev arched ceiling or top.

The floor stones at Fig. 3 are, stepped at the ends that are to be joined to each other in such a manner that although they overlap each other perfectly smooth joints are formed as illustrated in Fig. 2.

The end joints oi" the shaped stones 5 are staggered as shown in Fig. 2 to the same extent as the floor stones overlap. The shapedv stones are all provided at their long lateral abutting surfaces With continuous grooves 0 that register with each other and are filled With tire-proof mortar or fireclay.

The supporting pillars in retorts of this kind are placed at the parts where the ends of the shaped stones abut uponeach other.

By constructingthe retort of shaped floor stones of equal length and as broad as the entirefurnace, and of narrow ceiling stones all of the same length as the floor stones, the result is obtained that whilst the sole of the furnace 'is'veryfirm and strong, the

arched ceiling is rendered so fl'exible" that it will expand andv contract at. the. various temperatures without serious detriment to its gas retaining capacity. Hence the periods during which such retorts remain operative are lengthened very considerably.

Finally it can be said that the new method of constructing retorts enables them to be made considerably longer than hitherto so that their. gas producing capacity is considerably increased.

I claim:

A retort for manufacturing gas comprising stepped overlapping trough-shaped floor pieces of the breadth of the whole retort; narrow ceiling pieces each provided at each lateral surface with a groove and placed side by side in groups above the saidfioor so as to form an arched ceiling, the groups of narrow adjacent ceiling pieces being placed end to end with the ends of the individual pieces displaced to the extent to which the trough-shaped floor piecesoverl'ap, and the groovesin each two abutting lateral surfaces registering with each other so as to form a channel"; and fireproof mortar in each said channel.

In testimony whereof I have slgned my name to thls specification.

eUsT v How. 

